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Carbon-containing hydroxyapatite obtained from fish bone as low-cost mesoporous material for methylene blue adsorption

Mukhamad Nurhadi, Mukhamad Nurhadi and Kusumawardani, Ratna and Wirhanuddin, Wirhanuddin and Gunawan, Rahmat and Hadi Nur, Hadi Nur (2019) Carbon-containing hydroxyapatite obtained from fish bone as low-cost mesoporous material for methylene blue adsorption. Bulletin of Chemical Reaction Engineering & Catalysis, 14 (3). pp. 660-671. ISSN 1978-2993


Official URL: http://dx.doi.org/10.9767/bcrec.14.3.5365.660-671


The carbon-containing hydroxyapatite has been synthesized using the fish bone obtained from East Kalimantan, Indonesia. The synthesis was conducted at varying calcination temperature (300-700 °C) and duration time (1-5 h). The carbon-containing hydroxyapatite were characterized by using Nitrogen adsorption-desorption, Fourier transform infrared spectroscopy, X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Thermogravi-metric analysis (TGA) and Differential thermal analysis (DTA). The carbon-containing hydroxyapatite nanopar-ticles consisted of the mesoporous structure with a specific surface area of 159 m2·g-1 and pore size of 44 Å. The carbon-containing hydroxyapatite nanoparticles were utilized as the adsorbent for the removal of methylene blue by varying the contact time, initial dye concentration, pH, adsorbent dosage and temperature. The maximum amount of adsorption capacity was 56.49 mg·g-1. The adsorption was well fitted with the Langmuir adsorption model (R2 ∼0.998) and the pseudo-second-order model. This indicated that the dye molecules were adsorbed on the surface-active site of carbon-containing hydroxyapatite via chemical binding, forming an adsorbate monolayer. Hence, the adsorption capability corresponds to the physical properties such as the surface area and pore volume of hydroxyapatite because the larger surface area consists of higher binding sites for the adsorption. Thermody-namic parameters, including the Gibbs free energy (ΔG), enthalpy (ΔH), and entropy (ΔS), indicated that the ad-sorption of methylene blue onto the carbon-containing hydroxyapatite nanoparticles was spontaneous. Thus, car-bon-containing hydroxyapatite nanoparticles can be applied as a low-cost adsorbent for the treatment of industrial effluents that are contaminated with the methylene blue.

Item Type:Article
Uncontrolled Keywords:Adsorption, Fish bone
Subjects:Q Science > QD Chemistry
ID Code:88604
Deposited By: Widya Wahid
Deposited On:15 Dec 2020 18:31
Last Modified:15 Dec 2020 18:31

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